An increasing number of Democrats are taking potshots at President Obama’s healthcare law ahead of a Supreme Court decision that could overturn it.

The public grievances have come from centrists and liberals and reflect rising anxiety ahead of November’s elections.

“I think we would all have been better off — President Obama politically, Democrats in Congress politically, and the nation would have been better off — if we had dealt first with the financial system and the other related economic issues and then come back to healthcare,” said Rep. Brad Miller (D-N.C.), who is retiring at the end of this Congress. Miller, who voted for the law, said the administration wasted time and political capital on healthcare reform, resulting in lingering economic problems that will continue to plague Obama’s reelection chances in 2012.

Rep. Dennis Cardoza (D-Calif.) also criticized his party’s handling of the issue, and said he repeatedly called on his leaders to figure out how they were going to pay for the bill, and then figure out what they could afford.

Cardoza, who like Miller will retire at the end of the Congress, said he thought the bill should have been done “in digestible pieces that the American public could understand and that we could implement.”

The most recent wave of misgivings from Democrats began with Rep. Barney Frank (D-Mass.), who told New York magazine that Democrats “paid a terrible price for healthcare.”